Actions

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Table of Contents of Chapter 5 – Actions

5.1    General 5.2    Authenticate 5.3    Author 5.4    Change 5.5    Discover 5.6    Hide 5.7    Identify

5.8    Inform 5.9    Interpret 5.10  MM-Add 5.11   MM-Animate 5.12  MM-Capture 5.13  MM-Disable 5.14  MM-Embed

5.15  MM-Enable 5.16  MM-Send 5.17  MU-Actuate 5.18  MU-Export 5.19  MU-Render 5.20  Post 5.21  Register

5.22  Track 5.23  Transact 5.24  UM-Animate 5.25  UM-Capture 5.26  UM-Import 5.27  UM-Render 5.28  UM-Send

5.1        General

The MPAI Metaverse Model assumes that a Source Process (User, Device, or Service) MM-Send a Request to a Destination Process (User, Device, or Service) to execute Actions on InItems placed at In-Locations. The Destination will execute the Request if the Source has the necessary InRights, place the OutItems at M-Locations, and grant to the Source OutRights to Act on the OutItems.

This version of this Technical Report preserves the different names of User, Device, and Service, instead of using the generic name “Process” to facilitate understanding of the nature of the different requests. However, it should be borne in mind that Sources and Destinations will all be implemented as Processes with appropriate Metadata.

This Chapter specifies the Actions that are supported by at least one Functionality Profile. An Action is called Basic when the request involves only one Action and Composite when it involves a plurality of Actions and potentially Processes.

Table 6 provides the elements of all Actions considered in this document. Note that some Actions are Composite, i.e., made of Basic Actions.

Table 6 – Table of the elements of the Action requests

Legend: D=Device, Mdata=Metadata, MLoc=M-Location, P=Process, S=Service, SA=Spatial Attitude, U=User, ULoc=U-Location, – = Absent.

The symbol ∧ in a list means that all the elements of the list should be included. The symbol – in a list means that the elements of the list should be considered separately.

	Source	Destination	Action	InItem	InLocation	OutItem	OutLocation	OutRights
Change	U	S	Change	Entity	MLoc	Entity	MLoc∨ –	Rights
Destroy	U	S	Destroy	Item	S	–	–	–
Discover	U	S	Discover	DiscoverIn	U	DiscoverOut	U	Rights
MU-Export	U	S	MU-Export	Item	S	Item	Address	Rights
Identify	U-D	S	Identify	Data & Mdata	Address-D	Item	S	Rights
UM-Import	U	D	Read	Data & Mdata	Address	Data & Mdata	D	Mdata
Inform	U	S	Inform	InformIn	MLoc	InformOut	U	Rights
Interpret	U	S	Interpret	InterpretIn	MLoc	InterpretOut	U	Rights
MM-Add	U	S	MM-Add	Entity ∧ SA	S	Entity	MLoc	Rights
MM-Animate	U	S	MM-Animate	Entity	MLoc	Entity	MLoc	Rights
MM-Capture	U	S	MM-Capture	Entity	MLoc	Entity	U	Rights
MM-Embed	U	S	MM-Add ∧ MM-Enable	Entity ∧ SA	S	Entity	MLoc	Rights
MM-Enable	U	S	MM-Enable	Entity	MLoc	Entity	MLoc	Rights
MM-Disable	U	S	MM-Disable	Entity	MLoc	–	–	–
MM-Send	P	P	Send	Item	P	Item	P	Rights Mdata
MU-Render	U	D	MM-Send	Entity	MLoc	Entity	D	Rights
	D	Act.	MU-Actuate	Data	D	media	ULoc	Mdata
MU-Actuate	U	D	MU-Actuate	Entity	D	Media	ULoc	Mdata
MU-Render	U	S	MM-Send	Entity	MLoc	Entity	D	Rights
	U	D	MU-Actuate	Entity	D	Media	ULoc	Mdata
Post	U	S	Post	Asset	S, Address	Asset	S	Rights
Register	human	S	Register	User Data	human ∨Address	Account	S	Rights
Track	U	S	MM-Embed	Persona ∧ SA	MLoc	Persona	MLoc	Rights
	U	D	UM-Capture	scene	ULoc	animation stream	D	Mdata
	D	U	UM-Send	Data & Mdata	D	Data & Mdata	U	Mdata
	U	S	Identify	Data & Mdata	S	Stream	S	Rights
	U	S	MM-Animate	Persona	MLoc	Entity	MLoc	Rights
	U	D	MU-Render	Persona	U	Media	ULoc	Mdata
Transact	U	S	Transact	Value	–	User	–	Rights
UM-Animate	U	S	UM-Animate	Entity ∧ Stream ∧ SA	MLoc	Entity	MLoc	Rights
UM-Capture	U-S	D	UM-Capture	scene	ULoc	Data	D	Rights
UM-Send	D	U	UM-Send	Data & Mdata	D	Data & Mdata	U	Mdata
	U	S	Identify	Data & Mdata	U	Entity	S	Rights
	U	S	MM-Embed	Entity ∧ SA	MLoc	Entity	MLoc	Rights
UM-Send	U	D	UM-Send	Data & Mdata	D	Data & Mdata	U	Mdata

Table 7 – Table of the elements present in a Response-Action

Out Item

Faulty Req

Wrong IDs

Missing Rights

Unsup ported

Wallet error

Clash

M-Loc

U-Loc

Address

Mis match

User Data

Authenticate

x

x

x

x

x

Author

x

x

Change

x

x

x

x

x

Identify

x

x

x

x

x

Discover

x

x

x

x

x

Hide

x

x

x

x

Inform

x

x

x

x

x

Interpret

x

x

x

x

x

x

MM-Add

x

x

x

x

x

x

MM-Animate

x

x

x

x

x

x

MM-Capture

x

x

x

x

x

MM-Disable

x

x

x

x

x

MM-Embed

x

x

x

x

x

x

MM-Enable

x

x

x

x

x

MM-Send

x

x

x

x

MU-Actuate

x

x

x

x

x

x

MU-Render

x

x

x

x

x

x

Post

x

x

x

x

Read

x

x

x

x

x

Register

x

x

x

Track

x

x

x

x

x

Transact

x

x

UM-Animate

x

x

x

x

x

x

x

UM-Capture

x

x

x

x

x

x

UM-Render

x

x

x

x

x

x

x

UM-Send

x

x

x

x

x

x

MU-Export

x

x

This Technical Report does not specify the protocol carrying the Request-Action and the Response-Action Items.

5.2        Authenticate

Definition	The Action of requesting that a Service confirm that an Entity MM-Embedded at an M-Location is what it claims to be. An object at a U-Location can be Authenticated by UM-Rendering and then Authenticating it.
Request-Action	Time Source UserID Destination ServiceID Action Authenticate InItems Entity ∨ EntityID InLocation M-LocationID ∨ UserID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-Location Out of range U-Location Out of range

5.3       Author

Definition	The Action of Calling a Service to obtain an Entity with associated OutRights to Act on the Entity.
Request-Action	Time Source UserID Destination ServiceID Action Author InItems Item ∨ ItemID ∨ Data & Metadata InLocation UserID ∨ Address OutItem Entity ∨ EntityID OutLocation UserID ∨ ServiceID OutRights RightsID
Response-Action	Success OutItem Entity ∨ EntityID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Wallet error Insufficient Value

5.4        Change

Definition	The Action of requesting that a Service modify the Rights of a User whose Persona is Embedded at an M-Location and provide OutRights, e.g., to further Change the Rights.
Request-Action	Time Source UserID Destination ServiceID Action Change InItems UserID ∨ (Rights ∧ RightsID) InLocation M-LocationID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-Location Out of range

5.5        Discover

Definition	The Action of requesting that a Service provide a DiscoveryOut Item containing the IDs of the Items relevant to the DiscoverIn Item with the OutRights to Act on the DiscoverOut Item.
Request-Action	Time Source UserID Destination ServiceID Action Discover InItem DiscoveryIn ∨ DiscoveryInID InLocation UserID ∨ ServiceID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem DiscoveryOut ∨ DiscoveryOutID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.6        Hide

Definition	The Action of requesting that a Service make the ID of an Item unavailable and provide OutRights, e.g., to make the ID available again.
Request-Action	Time Source UserID Destination ServiceID Requested Action Hide InItem Item ∨ ItemID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.7        Identify

Definition	The Action of requesting that a Service produce an Item from Data & Metadata or update an Item with the OutRights to Act on the Item.
Request-Action	Time Source Process ID Destination ServiceID Action Identify InItems Data & Metadata ∨ InItems ∧ InItemID ∧ InRights InLocation UserID OutLocation ServiceID
Response-Action	Success OutItem ItemID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.8        Inform

Definition	The Action of requesting that a Service provide an InformOut Item containing information about an InItem, such as the Metadata of the InItem, with the OutRights to Act on the InformOut Item.
Request-Action	Time Source UserID Destination ServiceID Action Inform InItem InformIn ∨ InformInID InLocation M-LocationID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem InformOut ∨ InformOutID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.9       Interpret

Definition	The Action of requesting that a Service provide an InterpretOut Item containing interpretation of an InItem, such as translation or extraction of Personal Status, with the OutRights to Act on the InterpretOut Item.
Request-Action	Time Source UserID Destination ServiceID Action Interpret InItem InterpretIn ∨ InterpretInID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem InterpretOut ∨ InterpretOutID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.10        MM-Add

Definition	The Action of requesting that a Service add an Entity at an M-Location with a Spatial Attitude and provide OutRights to Act on the MM-Added Entity.
Request-Action	Time Source UserID Destination ServiceID Action MM-Add InItem (Entity ∨ EntityID) ∧ Spatial Attitude InLocation ServiceID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Entity ∨ EntityID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Clash Entity clashes with another Entity M-Location Out of range

5.11    MM-Animate

Definition	The Action of requesting that a Service change the features of a Model MM-Embedded at an M-Location with a Stream and provide the OutRights to Act on the MM-Added Entity.
Request-Action	Time Source UserID Destination ServiceID Action MM-Animate InItem (Model ∨ ModelID) ∧ Spatial Attitude ∧ (Stream ∨ StreamID) InLocation M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Item mismatch Entity Data Type and Animation Stream Data Type.

5.12    MM-Capture

Definition	The Action of requesting that a Service MM-Send selected Entities MM-Embedded at an M-Location to a User.
Request-Action	Time Source UserID Destination ServiceID Action MM-Capture InItem List of EntityIDs InLocation M-LocationID OutLocation UserID OutRights Rights ∨ RightsID
Response-Action	Success OutItem List of EntityIDs Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.13    MM-Disable

Definition	The Action of requesting that a Service stop MM-Enabling selected Entities Embedded at an M-Location and provide OutRights to Act on the MM-Disabled Entities.
Request-Action	Time Source UserID Destination ServiceID Action MM-Disable InItem List of EntityIDs InLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-Location Out of range

5.14    MM-Embed

Definition	The Composite Action of requesting that a Service MM-Add and MM-Enable an Entity either located at a Service or at an M-Location at a destination M-Location with a Spatial Attitude and provide OutRights to Act on the MM-Embedded Entity.
Request-Action	Time Source UserID Destination ServiceID Action MM-Add InItem Entity ∨ EntityID InLocation ServiceID ∨ M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID Source UserID Destination ServiceID Action MM-Enable InItem (Entity ∨ EntityID) ∧ Spatial Attitude InLocation M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Clash Entity clashes with another Entity M-Location Out of range

5.15    MM-Enable

Definition	The Action of requesting that a Service accept requests to MM-Send selected Entities MM-Added at an M-Location or to MM-Embed those selected Entities at a destination MM-Location and provide OutRights to act on the M-Entities.
Request-Action	Time Source UserID Destination ServiceID Action MM-Enable InItem Entity ∨ EntityID InLocation M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Rights ∨ RightsID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-Location Out of range

5.16    MM-Send

Definition	The Action of requesting that a Service forward to a Process an Item with OutRights to Act on the Item, or Data/Metadata.
Request-Action	Time Source ProcessID Destination ServiceID Action Send InItem Item ∨ ItemID ∨ Data & Metadata InLocation ProcessID ∨ M-Location OutLocation ProcessID ∨ M-Location OutRights Rights ∨ RightsID
Response-Action	Success OutItem Item ∨ ItemID ∨ Data & Metadata Error Request Faulty IDs Incorrect Rights Missing or incomplete

5.17    MU-Actuate

Definition	The Action of requesting that a Device present at a U-Location as Media with a Spatial Attitude an Entity MM-Embedded at an M-Location.
Request-Action	Time Source UserID Destination DeviceID Action MU-Actuate InItem Data & Metadata ∧ Spatial Attitude InLocation DeviceID OutLocation U-LocationID OutRights Metadata
Response-Action	Success OutItem Media ∧ Spatial Attitude Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete U-Location Out of range

5.18    MU-Export

Definition	The Action of requesting that a Process stores an Item containing the IDs of an Item at an Address.
Request-Action	Time Source ProcessID Destination ServiceID Action MU-Export InItem Item ∨ ItemID InLocation M-LocationID ∨ ProcessID OutLocation Address
Response-Action	Success OutItem Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Address Incorrect

5.19    MU-Render

Definition	The Composite Action of requesting that: 1.      A Service MM-Send selected Entities Embedded at an M-Location to a Device. 2.      The Device MU-Actuate at a U-Location with a Spatial Attitude the Entity received.
Request-Action	Time Source UserID Destination ServiceID Action MM-Send InItem List of Entities InLocation M-LocationID OutLocation DeviceID Source UserID Destination DeviceID Action MU-Actuate InItem Data & Metadata ∧ Spatial Attitude InLocation DeviceID OutLocation U-LocationID OutRights Metadata
Response-Action	Success Action result Media ∧ Spatial Attitude Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-Location Out of range

5.20    Post

Definition	The Action of requesting that a Marketplace include an Asset to its repertory of Assets.
Request-Action	Time Source UserID Destination ServiceID Action Post InItem Asset ∨ AssetID InLocation UserID ∨ ServiceID OutLocation ServiceID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Wallet Insufficient Value

5.21    Register

Definition	The Action of a human requesting that a Service (M-Instance/Environment) grant their Users the Rights to perform Actions in the M-Instance/Environment.
Request-Action	Time Source humanID Destination ServiceID Requested Action Register InItem UserData ∨ UserDataID InLocation Address OutLocation ServiceID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Account ∨ AccountID Error FaultyReq The Request is Faulty Wallet Insufficient Value

5.22    Track

Definition	The Composite Action of requesting: 1.      Service to MM-Embed a Model at an M-Location with a Spatial Attitude. 2.      Service to MU-Animate the Model MM-Embedded at an M-Location. 3.      Service to MU-Render specified Entities at the M-Location to a U-Location.
Request-Action	Time Source UserID Destination ServiceID Action MM-Embed InItem (Model ∨ ModelID) ∧ Spatial Attitude InLocation ServiceID OutLocation M-LocationID OutRights Rights ∨ RightsID Source UserID Destination DeviceID Action UM-Animate InItem (Persona ∨ PersonaID) ∧ Stream InLocation M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID Source UserID Destination ServiceID Action MU-Render InItem Data & Metadata InLocation M-LocationID OutLocation U-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Media ∧ Spatial Attitude Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete M-LocationID Out of range U-LocationID Out of range

5.23    Transact

Definition	The Action of a User1 requesting that a Service: 1.      Assign Rights on an Asset to User2. 2.      Cause: 2.1.   Wallet1 of User1 to be increased by Value1. 2.2.   Wallet2 of User2 to be decreased by Value2. 2.3.   Wallet3 of the Service enabling/facilitating the Transaction to be increased by Value3 (optionally).
Request-Action	Time Source UserID Destination ServiceID Action Transact InItem AssetID InLocation M-LocationID ∨ ServiceID OutLocation UserID ∨ ServiceID OutRights Rights ∨ RightsID
Response-Action	Success OutItems AssetID ∧ WalletID1 ∧ WalletID2 ∧ WalletID3 Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Wallet Wallet2 has insufficient Value

5.24    UM-Animate

Definition	The Composite Action of requesting to: 1.      UM-Capture an animation stream extracted from a scene at a U-Location. 2.      UM-Send the animation stream and Metadata to a User. 3.      Identify the Animation Stream. 4.      MM-Animate the Model MM-Embedded at the M-Location using the Animation Stream.
Request-Action	Time Source UserID Destination DeviceID Action UM-Capture InItem scene InLocation U-LocationID OutLocation DeviceID OutRights Metadata Source DeviceID Destination UserID Action MM-Send InItem Data & Metadata InLocation DeviceID OutLocation UserID OutRights Metadata Source UserID Destination ServiceID Action Identify InItem Data (stream) & Metadata InLocation UserID OutLocation UserID OutRights Rights ∨ RightsID Source UserID Destination ServiceID Action MM-Embed InItem (Entity ∨ EntityID) ∧ Spatial Attitude InLocation UserID OutLocation M-Location OutRights Rights ∨ RightsID Source UserID Destination ServiceID Action MM-Animate InItem (ModelID ∨ StreamID) ∧ Stream InLocation M-LocationID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem EntityID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete U-Location Out of range M-Location Out of range

5.25    UM-Capture

Definition	The Action of requesting that a Device acquire Media from a scene at a U-Location.
Request-Action	Time Source UserID Destination DeviceID Action UM-Capture InItem scene InLocation U-LocationID OutLocation DeviceID
Response-Action	Success OutItem Data Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete U-Location Out of range

5.26    UM-Import

Definition	The Action of a User requesting that a Service make available Data & Metadata, or an Item stored at an Address.
Request-Action	Time Source UserID Destination ServiceID Requested Action Read InItem Data & Metadata ∨ Item InLocation Address OutLocation UserID
Response-Action	Success OutItem Data & Metadata Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete

5.27    UM-Render

Definition	The Composite Action of requesting: 1.      A Device to UM-Capture a scene at U-Location. 2.      The Device to MM-Send Data and Device-provided Metadata to a User. 3.      A Service to Identify an Entity from UM-Sent Data and Metadata. 4.      A Service to MM-Embed the Entity at an M-Location with a Spatial Attitude.
Request-Action	Time Action UM-Capture InItem scene InLocation U-LocationID OutLocation DeviceID Source DeviceID Destination UserID Action MM-Send InItem Data & Metadata InLocation DeviceID OutLocation UserID OutRights Metadata Source UserID Destination ServiceID Action Identify InItem Data (stream) & Metadata InLocation UserID OutLocation UserID OutRights Rights ∨ RightsID Source UserID Destination ServiceID Action MM-Embed InItem (Entity ∨ EntityID) ∧ Spatial Attitude InLocation ServiceID OutLocation M-LocationID OutRights Rights ∨ RightsID
Response-Action	Success OutItem Entity ∨ EntityID Error FaultyReq The Request is Faulty IDs Incorrect Rights Missing or incomplete Clash Entity clashes with another Entity M-Location Out of range U-Location Out of range

5.28    UM-Send

Definition	The Action of a Device forwarding Data & Metadata to a Process.
Request-Action	Time Source DeviceID Destination ProcessID Action UM-Send InItem Data & Metadata InLocation DeviceID OutLocation ProcessID OutRights Metadata
Response-Action	Success OutItem Data & Metadata Error Request Faulty IDs Incorrect Rights Missing or incomplete U-Location Out of range

 

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